Finding the Fourth Proportional to 2,009.63, 2,771.08 and 1,380.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,009.63 : 2,771.08 = 1,380.47 : x
2. Step 2: Convert to fraction form
   2,009.63/2,771.08 = 1,380.47/x
3. Step 3: Cross multiply
   2,009.63x = 2,771.08 × 1,380.47
4. Step 4: Simplify right side
   2,009.63x = 3,825,375.50
5. Step 5: Solve for x
   x = 3,825,375.50/2,009.63
6. Step 6: Final answer
   x = 1,903.52